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Expired Canadian patentCanada

Base metal article with a discontinuous coating of discrete refractory metal particles in clusters and process for depositing same

CA 1079131 A · Owner: Warner-London · Inventors: Wolf, James S.; Warner, Joshua B.

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Abstract From the Canadian patent

An article of improved wear characteristics and composed of a relatively low wear resistant base metal coated by a particulate refractory metal having a melting point of at least 1490°C deposited within the near surface region thereof comprising a base metal or alloy of relatively low wear resistance a, refractory metal deposited within said near surface region said, refractory metal being selectively deposited in the form of discrete particles, and the particles being idiomorphic or blocky or equiaxial or spheroidal or acicular or dendritic and a plurality of these particles having dimensions of less than 10 micrometers, a plurality of the particles being contiguous to form clusters of the …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted June 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 10, 1980
Term endedJune 10, 1997
Patent numberCA 1079131 A
Classification (IPC)C25D15/00 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 10, 1980Term endedJune 10, 1997

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.